Film-winding device.



H. G. MORDAUNT.

FILM WINDING DEVICE. APPLICATION man JAN. 24. 1911.

lfififlmu Patented 12111.8,1918.

L/ r I 0 ATTORNEYS .ing device;

' snares rnnnnr oration.-

BERRY G. MORDAUNT, 0F SALT LAKE CITY, UTAH, ASSIGNOB: 0F ONE-HALF T0LITTLE GIANT MANUFACTURING & SALES COMPANY, OF OMAHA, NEBRASKA.

FILMWI1\TDI1\TG DEVICE.

Specification of Letters Patent.

Patented Jan. 8, 1218.

Original application filed July 25 1916, Serial No 111,124. Divided andthis application filed January 241-,

' 1917. Serial No. 144,276.

To all whom it may concern:

Be it known that I, HARRY G. MORDAUNT, a citizen of the United States,and a resident of Salt Lake City, in the county of Salt Lake and Stateof Utah, have invented a certain new and useful Improvement inFilm-Win'din Devices, of which the following is a specification.

the necessity of rotating the take-up roll by hand.

Generally speaking, the mechanism provided by my invention includessprin operated gearing associated with the ta e -up roll of a camera,and normally held against operation by a suitable locking arrangement,for actuation of the take-up roll, when said locking arrangement isreleased, to rotate the take-up roll for the usual purpose.

A further obj eot of the invention is to provide a mechanism as abovewhich will enable the user to manually actuate the take-up roll Wheneverit is desired to do so.

In the accompanying drawings, illustrating the preferred form of myinyention, and forming a part of this specification:

Figure 1 is a vertical sectional view showing the mechanism for windingthe film upon the take-up roll,

Fig. 2 1s a section on the line 2--2 of Fig. 1;

F ig. 3 is a sectional view of a portion of the device for locking andreleasing the winding mechanism, said device being shown in its normalposition;

Fig. 4 is a view similar to Fig. 3, showing the device in position topermit of the operation of the winding mechanism;

Fig. 5 is a view of a contr vance for preventing the accidentaloperation of the lock- Fig. 6 1s a fragmentary view of the taken rollshaft and an associated part.

The invention illustrated in the accomanyin'g drawing is what is nowbelieved to at 12, has mounted on said side thereof ad- Jacent the saidtake-up roll, a small auxiliary casing 15 for forming a compartment incos ng the winding mechanism for the take-up roll, which will bepresently de scribed in detail.

The usual shaft 16 for manually operat- .ing the take-up roll isconstructed in the ordinary way andextends through the auxiliary casing15, as shown in Fig. 2. Mounted upon the shaft 16 intermediate the endsthereof, is a small gear wheel 17, the outer face of which is providedwith a ratchet surface 18 for engaging a pin 19, carried by the saidshaft 16, so that when the gear 17 is rotated a similar motion will betransmitted to the shaft 16. By interlocking the shaft 16 and gear 17 inthis manner, it will be apparent that, should it be desired, the shaft16 may be manually rotated relative to the gear 17 in order to operatethe take-up roll 12.

The mechanism for rotating the gear 17 preferably comprises a large gear20, mounted upon the stub shaft 21 and moshing with the said gear 17,and also with another large gear 22, which is rotated by means of asmall motor in the form of a coil spring 23 adapted to be wound by meansof the stem 24 extending eXteriorly of the casing 15.

A locking device is employed in connection with the winding mechanismfor normally preventing operation thereof, and which when actuated willpermit of the Winding of the film upon the take-up roll 12, and saiddevice preferably comprises a member 25 pivoted at one end upon thewinding stem 24 between the gear 22 and the adjacent side of the casing15.

The member 25 is curved intermediate its end, as indicated at 26, and isprovided upon the extreme end thereof with an enlarged portion 27 havinga stem 28 project ing therefrom and through the wall of the casing 15,and provided on its outer end with a thumb piec'29 whereby the operatormay readily depress the stem 28 and thus swing the member 25 about itspivot. A leaf spring 30 and a coil spring 31, the former of whichengages member 25 and the latter of which iswound about the stem 28, maybe employed for normally rctaining the member shown in Fig. 1.

25 iniits locking position, as

' along the the enlarged portion 27 operation. In

is moved into registry with the pin 32,

thus permitting the rotation of the gear 20.

oWever, in View of the eccentric arrangement of the groove 33, itwill benecessary for the operator to remove the pressure from the thumb piece29 before the gear 20 will rotate. As soon as this pressure is relieved,the pin or projection 32 will ride groove 33 and in View of thearrangement of said groove the member 25 will be moved toward its normalposition and the thumb piece again projects out- Wardly. After theprojection 32 has disengaged from the slot 33, the gear 20 continues itsrotation, driving the gear 17 and thus Winding the film upon the roll12. When the revolution, the film will have been positioned for the nextexposure and the projection 32 will again contact the edge of of thelocking memb'er, thus preventing further operation of the windingmechanism.

In Fig. 5 there is shown a means for preventing the accidental operationof the member 25, and said means preferably comprises an arm 34 pivotedto the exterior of the casing 15 and having a cap 35 at its free end,which fits over the thumb piece 29 when the device is not in use.

I claim 1. In a camera having a film, the combination with a take-uproll, the mechanism including a gear for automatically winding the filmon said roll, a depressible device in the path of movement of a portionof said gear for normally retaining said mechanism again contact saiddevice gear 20 has made one complete naeapve 'therein arrangedcccentrically-relative to the axis of rotation of said gear forreceiving said projection when said locking device is released, wherebysaid device is returned to normal position as said gear is ros liated,and whereby said projection will after a single rotation of said gear.

3. In a camera having a .film, the combination with the take-up roll, ofa spring actuated winding mechanism for the said takeup roll including agear having a projection extending from one face thereof, a controllinglever pivoted at one end and having exterits opposite end providedwithan an internally nally projecting portion, and

projecting portion normally extending into.

the path of movement of said gear projection, said last-mentionedportion of said.

lever having a groove therein movable into registration with the gearprojection and arranged ecccntric to the axis of the gear, for thepurpose described.

at. In a camera having a film, the combination with the take-up roll, ofa winding mechanism therefor including a gear, a con-,

trolling lever having an externally projecting portion and an inner partcooperating with a portion of the gear to normally hold the latteragainst rotation, said inner part of said lever having a portionengageable by the said portion of the gear when the latter is released,to return the lever to normal position before the gear has completed itsoperative movement.

HARRY e. MORDAUNT.

